Letter from Frederika Bremer to Abigail Hopper Gibbons, May 20, 1856
written by Frederika Bremer, 1801-1865 (1856); edited by Sarah Hopper Gibbons Emerson, 1835-1918; in Life of Abby Hopper Gibbons: Told Chiefly through Her Correspondence, vol. 1 (New York, NY: G. P. Putnam's Sons, 1897), 260-261